74043172 has 12 divisors (see below), whose sum is σ = 148086400. Its totient is φ = 31732776.

The previous prime is 74043169. The next prime is 74043197. The reversal of 74043172 is 27134047.

74043172 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 2644399 = 74043172 / (7 + 4 + 0 + 4 + 3 + 1 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 74043172.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1322172 + ... + 1322227.

Almost surely, 2^74043172 is an apocalyptic number.

It is an amenable number.

74043172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74043172 is a wasteful number, since it uses less digits than its factorization.

74043172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2644410 (or 2644408 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 74043172 is about 8604.8342226913. The cubic root of 74043172 is about 419.9152739148.

The spelling of 74043172 in words is "seventy-four million, forty-three thousand, one hundred seventy-two".